F(2A)=3x^2-9

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Solution for F(2A)=3x^2-9 equation: 


Simplifying
F(2A) = 3x2 + -9

Remove parenthesis around (2A)
F * 2A = 3x2 + -9

Reorder the terms for easier multiplication:
2F * A = 3x2 + -9

Multiply F * A
2AF = 3x2 + -9

Reorder the terms:
2AF = -9 + 3x2

Solving
2AF = -9 + 3x2

Solving for variable 'A'.

Move all terms containing A to the left, all other terms to the right.

Divide each side by '2F'.
A = -4.5F-1 + 1.5x2F-1

Simplifying
A = -4.5F-1 + 1.5x2F-1

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